1. 05 Jan, 2012 8 commits
  2. 03 Jan, 2012 26 commits
  3. 29 Dec, 2011 6 commits
    • Seung-Woo Kim's avatar
      drm/exynos: added hdmi display support · d8408326
      Seung-Woo Kim authored
      This patch is hdmi display support for exynos drm driver.
      
      There is already v4l2 based exynos hdmi driver in drivers/media/video/s5p-tv
      and some low level code is already in s5p-tv and even headers for register
      define are almost same. but in this patch, we decide not to consider separated
      common code with s5p-tv.
      
      Exynos HDMI is composed of 5 blocks, mixer, vp, hdmi, hdmiphy and ddc.
      
      1. mixer. The piece of hardware responsible for mixing and blending multiple
      data inputs before passing it to an output device.  The mixer is capable of
      handling up to three image layers. One is the output of VP.  Other two are
      images in RGB format.  The blending factor, and layers' priority are controlled
      by mixer's registers. The output is passed to HDMI.
      
      2. vp (video processor). It is used for processing of NV12/NV21 data.  An image
      stored in RAM is accessed by DMA. The output in YCbCr444 format is send to
      mixer.
      
      3. hdmi. The piece of HW responsible for generation of HDMI packets. It takes
      pixel data from mixer and transforms it into data frames. The output is send
      to HDMIPHY interface.
      
      4. hdmiphy. Physical interface for HDMI. Its duties are sending HDMI packets to
      HDMI connector. Basically, it contains a PLL that produces source clock for
      mixer, vp and hdmi.
      
      5. ddc (display data channel). It is dedicated i2c channel to exchange display
      information as edid with display monitor.
      
      With plane support, exynos hdmi driver fully supports two mixer layes and vp
      layer. Also vp layer supports multi buffer plane pixel formats having non
      contigus memory spaces.
      
      In exynos drm driver, common drm_hdmi driver to interface with drm framework
      has opertion pointers for mixer and hdmi. this drm_hdmi driver is registered as
      sub driver of exynos_drm. hdmi has hdmiphy and ddc i2c clients and controls
      them. mixer controls all overlay layers in both mixer and vp.
      
      Vblank interrupts for hdmi are handled by mixer internally because drm
      framework cannot support multiple irq id. And pipe number is used to check
      which display device irq happens.
      
      History
      v2: this version
       - drm plane feature support to handle overlay layers.
       - multi buffer plane pixel format support for vp layer.
       - vp layer support
      
      RFCv1: original
       - at https://lkml.org/lkml/2011/11/4/164Signed-off-by: default avatarSeung-Woo Kim <sw0312.kim@samsung.com>
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
      Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      d8408326
    • Inki Dae's avatar
      drm/exynos: added mutex lock and code clean. · c32b06ef
      Inki Dae authored
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      c32b06ef
    • Inki Dae's avatar
      drm/exynos: extend vblank off delay time. · 52c68814
      Inki Dae authored
      some platform could be entering to sleep after short time once lcd panel off
      but before that vblank could be off by vblank off delay feature. at that time,
      vblank doesn't have the pair between vblank_get/put. so this path makes vblank
      off delay to have enough.
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      52c68814
    • Inki Dae's avatar
      drm/exynos: change driver name. · 0edf9936
      Inki Dae authored
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      0edf9936
    • Seung-Woo Kim's avatar
      drm/exynos: Support multi buffers · 229d3534
      Seung-Woo Kim authored
      These formats(NV12M, NV12MT and YUV420M) have non contiguous  multi
      planes, so each plane uses different buffer. The exynos drm should
      support multi buffer for them.
      Signed-off-by: default avatarSeung-Woo Kim <sw0312.kim@samsung.com>
      Signed-off-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      229d3534
    • Seung-Woo Kim's avatar
      drm: Add multi buffer plane pixel formats · 83052d4d
      Seung-Woo Kim authored
      Multi buffer plane pixel format has seperated memory spaces for each
      plane. For example, NV12M has Y plane and CbCr plane and these are in
      non contiguous memory region. Compared with NV12, NV12M's memory shape
      is like following.
      NV12  : ______(Y)(CbCr)_______
      NV12M : __(Y)_ ..... _(CbCr)__
      Signed-off-by: default avatarSeung-Woo Kim <sw0312.kim@samsung.com>
      Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
      Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
      83052d4d